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Need advice with power consumption (TinyRex Solo)

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  • Need advice with power consumption (TinyRex Solo)

    Hello.

    We noted that in accordination with datasheet TinyRex Solo requires 3W on peak (without GPU).

    However in PCB it requires 3 different power sources (transformed from 5V5 level): 5V 1.5A + 3V3 2A + 2V5 0,35A

    If we understand right it requires 5V5 4A = 22W (from baseboard to module).

    For what other 19W ?
    Is it uses to supply GPU and USB devices?

    We need to get some clarification for this.


    Thanks!

  • #2
    Hi,
    When you say 5V 1.5A,3V2A etc Are you referring the Switching/LDO Regulator's specification? If possible add an image where it's mentioned so.

    Thanks.

    Comment


    • #3
      Hello, Lakshmi.
      No, we are referring the TinyRex's scheme. We are looking at the labels "DESIGN NOTE" (at the top-right corner) of each power connection.

      Sure, I've attached TinyRex's requirements (pdf file)
      Attached Files

      Comment


      • #4
        Hey,
        Please go through this:
        https://www.imx6rex.com/2015/07/imx6...r-consumption/
        It's said that power consumption for single thread cpu and 1 memory.
        That doesn't mean that design has to be min. power consumption. You need to look at part/IC's datasheet n should calculate the current consumption

        Comment


        • #5
          Originally posted by Lakshmi View Post
          Hey,
          Please go through this:
          https://www.imx6rex.com/2015/07/imx6...r-consumption/
          It's said that power consumption for single thread cpu and 1 memory.
          That doesn't mean that design has to be min. power consumption. You need to look at part/IC's datasheet n should calculate the current consumption
          It's clear
          Thank you for advice!

          Comment


          • #6
            Do not forget, power supply has to be able to deliver the peak currents which are usually much higher than continuous currents. So I would not just add the numbers, that is not an accurate calculation.

            This may help you: https://www.imx6rex.com/2015/07/imx6...r-consumption/

            Click image for larger version

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